headers
#21
11-29-2007 | 06:50 AM
Champion
Joined: Aug 2005
Posts: 3,313
Likes: 8
RE: headers
12 hp gain on 330 horsepower (5.7 Hemi with a power steering pump)
sounds reasonable with mufflers behind the headers
and is inline with what other reliable testers have found
such as 17 hp without mufflers:
http://www.popularhotrodding.com/eng...emi/index.html
sounds reasonable with mufflers behind the headers
and is inline with what other reliable testers have found
such as 17 hp without mufflers:
http://www.popularhotrodding.com/eng...emi/index.html